{"paper":{"title":"The Antennae Galaxies (NGC 4038/4039) Revisited: ACS and NICMOS Observations of a Prototypical Merger","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.EP","authors_text":"(2) University of Toledo, (3) Carnegie Observatories, 4), (4) Naval Research Laboratory, (5) The University of Arizona, (6) The Johns Hopkins University, (7) European Southern Observatory, (8) Instituto de Estructura de la Materia, A. Alonso-Herrero (8) ((1) Space Telescope Science Institute, Barry Rothberg (1, Bradley C. Whitmore (1), Claus Leitherer (1), CSIC), Francois Schweizer (3), George Rieke (5), Marcia Rieke (5), Rupali Chandar (2), S. Mengel (7), W. P. Blair (6)","submitted_at":"2010-05-04T20:20:17Z","abstract_excerpt":"The ACS and NICMOS have been used to obtain new HST images of NGC 4038/4039 (\"The Antennae\"). These new observations allow us to better differentiate compact star clusters from individual stars, based on both size and color.  We use this ability to extend the cluster luminosity function by approximately two magnitudes over our previous WFPC2 results, and find that it continues as a single power law, dN/dL propto L^alpha with alpha=-2.13+/-0.07, down to the observational limit of Mv~-7. Similarly, the mass function is a single power law dN/dM propto M^beta with beta=-2.10+/-0.20 for clusters wi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1005.0629","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}